| 摘要 |
<p>1,120,207. Valves. RANSBURG ELECTRO-COATING CORP. 14 July, 1965 [15 July, 1964], No. 29938/65. Heading F2V. Application of a fluid pressure to a conduit 56, Fig. 3, causes leftward movement of a free piston 58 thereby translating an adjustably spring- loaded stem 26 to unseat an obturator 27 having a tapered metering portion 25. The valve seat 23 is removable and leads to a chamber 16 into which open two conduits 21, 22. A stem packing 39 is provided with a screw 42 having a head 44 with tool holes 43 which are accessible through openings in the casing. The latter is in two parts 10, 12 the relative positions of which are adjustable to vary the distance the piston can move the stem 26 in an obturator opening direction, which distance is indicated on a scale 65 on the part 10. The casing part 14 may be removed for cleaning purposes without disturbing the obturator. The valve may be employed in a circulating paint system for metering paint to a spray gun. The valve seat is connected to the circulating system (76, Fig. 5, not shown), a conduit (21) leads to the spray gun (86) and a conduit (22) is connected to a solvent source via a valve (85). The valve is cleaned upon opening the solvent valve and seating the obturator.</p> |
